I wanted to buy an Acura CL, but not if I can't get my empeg in there, it has a custom stereo panel.

acura-cl.com has some message boards, someone has posted some pictures of a replacement panel kit which allows the CL to accept a standard DIN head unit, without looking like garbage.

http://www.acura-cl.com/forums/showthread.php?s=&threadid=81870